Improved water-back for ranges



. BRADFORD.

Range. l No. 43,967. Patented' Aug. 3o, 1864.

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UNITED STATES ATENT TFICE.

IMPROVED WATER-BACK FOR RANGES.

Specification forming part of Letters Patent No. @3,967, dated August 30, 1864.

To all whom it may concern.-

Be it known that I, THOMAS BRADFORD, of Boston, in the county of Suft'olk -and State of Massachusetts, have invented a new and useful Improvement in Water'Backs for Ranges and I do hereby declare thatthe following is a full, clear, and exact description of the same,

reference being had to the accompanying drawings., making a part of this specication, in which- Figure 1 is a front view of the grate of a range, partly in section, as indicated by the line :v fr, Fig. 2; Fig. 2, ahorizontal section of the same, taken in the line y y, Fig. l.

Similar letters of reference indicate corresponding parts in the two tgures.

This invention consists in having the waterback extend around the ends of the re chamber or grate, as hereinafter set forth, whereby a greater heating-surface than usual is not only obtained, but the usual end linings of the lire-chamber or grate dispensed with, as here inafter set forth.

To enable those skilled in thc art to fully understand and construct my invention, I will proceed to describe it.

A represents the ure-chamber of a range; B B' the grate; and C, the water-chamber or space which extends around both ends ofthe rechamber, as shown at a a.

D D' are two pipes, which communicate with the water-chamber C. These pipes are placed one over the other. The lower one, I), takes the cold water from the boiler to the chamber C, while the upper one, D', takes the warm water from C to the boiler, thus keeping up a circulation through the chamber (l and the boiler in the same way as with the ordinary water-backs. One extension, a, may only be u ed, but bothgof them would, of course, be

preferable. The ordinary water-backs extend along the back of the re chamber A only, and hence the sides ot the same require to be protected from the heat of the fire by a lining which requires to be renewed about every two years at a cost of from three dollars to ve dollars.

My improvement admits of the side linings being dispensed with, as the side extensions of the water chamber protect them, while said extensions augment materially the heatingsurface ofthe waterchamber, two very essential features, as a saving is effected in the repairs of the range, and also a saving effected in the consumption ot' fuel where hot water is required at all times.

I am aware that Letters Patent, granted on the 17th ot' June, 1856, to E. Whiteley, describe a circular rire-pot surrounded on all sides by a waterchambcr. This I do not claim, and it is moreover inapplicable to my invention, inasmuch as a circular fire-pot cannot properly be used in a range.

I do not claim water-spaces or water-chambers surrounding the lire-chamber for the purpose of protecting the oven against the scorching heat of the nrc-chamber.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination of the water-back C, tlc end water-chambers, a a, the supply-pipe D, discharge-pipe D', and open front grate, B', all constructed, arranged, and employed as and for the purposes herein specified.

THOMAS BRADFORD. Witnesses A. A. RANNEY,

J. B. RrcHARDsoN. 

